Castro committed a pretty bad defensive gaffe when he didn’t even attempt a double play because he thought he already recorded the third out of the inning. He held onto the ball and the tying run scored on the play. The Cubs lost 3-2 to the San Francisco Giants.

Chicago Cubs president of baseball operations Theo Epstein shot down rumors they were shopping Castro. Trade rumors can affect a person’s confidence even when they are not involved in the rumor.

What is the best way to deal with his lack of concentration? Is benching him the right answer? Cubs manager Dale Sveum hinted that Castro could see himself out of the lineup tonight against the Milwaukee Brewers. Sveum has been vocal when the 22-year old has made a mistake and even called his last error “unacceptable.”

This wasn’t the only lapse in concentration that Castro has committed recently. He pulled up on a steal attempt because he thought Joe Mather had fouled off the pitch. Mather didn’t make contact and Castro was caught in a rundown. He had a problem last season when Bobby Valentine, current manager of the Boston Red Sox and former ESPN baseball analyst, criticized him for not being set defensively when the pitcher threw the ball. Castro had his back to the play and was bashed by the rest of the media after Valentine pointed it out on live television.

Castro has been the only consistent offense for Chicago this year. Bryan LaHair and Alfonso Soriano have been hot at different times, but Castro has batted over .300 since Opening Day.

Chicago has one of the worst records in baseball (18-36) and it isn’t going to get any better this year. They will be openly shopping Matt Garza, Ryan Dempster, Soriano and other players at some point in the season.

Castro needs to look at the team’s struggle as a mental test. Unless you are Derek Jeter, a player isn’t going to be on a winning team every year. If he handles losing poorly, he will not progress in his development. I hope Sveum continues to be hard on him. I believe he deserves to be benched for a couple games, but then openly praised if he comes back playing harder than ever.

The Cubs fans are rooting for you, Starlin. Please lead by example and your teammates will follow.